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Using the Friedewald equation, calculate the concentration of LDL cholesterol for the following specimen. Report your answer to the nearest whole number. Total Cholesterol = [C]  mg/dL Triglycerides = [TG]   mg/dL HDL = [H]  mg/dL

You believe you have observed an effect based on whether nurses or medical lab techs collected hemolyzed specimens.  You calculated your chi-square statistic as 4.800. There are two rows and two columns (nurses versus medical lab techs and hemolyzed versus non-hemolyzed specimens. Use the p = 0.05 standard. Is the difference between nurses and medical lab techs statistically significant? chisqtable.JPG

A positive result for a patient who does not actually have the condition is considered to be a

A study was conducted comparing a new method of ADH measurement, a hormone produced in your posterior pituitary gland, with the confirmatory MRI for diabetes insipidus. Given the following percentages, what was the diagnostic specificity? Answer to the nearest whole number. ADH POS / MRI POS = [A] ADH POS / MRI NEG = [C] ADH NEG / MRI POS = [D] ADH NEG / MRI NEG = [B]

Calculate the relative uncertainty for each of the following measurements. [x] g ± [y] g

A study was conducted comparing a new tumor marker screening test with the diagnostic reference standard, tissue biopsy. Given the following results, what was the diagnostic sensitivity? Answer to the nearest whole number. Screen POS / Biopsy POS = [A] Screen POS / Biopsy NEG = [C] Screen NEG / Biopsy POS = [D] Screen NEG / Biopsy NEG = [B]

Which of the following is the correct formula for mean corpuscular hemoglobin concentration (MCHC)?

The platelets were counted by standard manual procedure in all 25 squares within the central square of a hemacytometer. The count was  [x]. What is the final platelet count (/mm3)?  Answer to the nearest whole number.

Which of the following would cause a trend pattern in the quality control data?

Which of the following equations represents the proportionality of two variables, where y is always 2 times the value of x?